International Journal of Economics (IJEC)

Price Dynamics and Demand Elasticity in the Platform Economy Era: A Quantitative Analysis of the Online Retail Sector in Indonesia

Ahmad Husin Lubis — 2026-01-05

This study investigates the determinants of price dynamics and demand elasticity in Indonesia's online retail sector, with particular emphasis on platform economy effects during the 2024-2025 period. Employing a double-log regression methodology with ordinary least squares (OLS) estimation, we analyze transaction-level data from major e-commerce platforms including Shopee, Tokopedia, and Lazada. The research reveals that demand elasticity in the Indonesian online retail market exhibits pronounced price sensitivity (elasticity coefficient: -1.23 to -1.67), indicating elastic demand characteristics. Cross-price elasticity estimates suggest significant substitution effects between platforms (range: 0.45 to 0.78), driven by the mobile-first architecture and promotional intensity of the digital ecosystem. Dynamic pricing mechanisms implemented by major platforms demonstrate adaptation to localized demand variations and competitive pressures. Our findings demonstrate that platform-based price competition generates downward pressure on margins while increasing consumer surplus, with elasticity heterogeneity across product categories ranging from -0.89 (electronics) to -1.95 (fashion and accessories). The study provides quantitative evidence that platform economy dynamics fundamentally reshape traditional price-demand relationships in emerging markets, offering actionable insights for retailers, policymakers, and platform operators managing competitive pricing strategies in this rapidly evolving ecosystem

Integrating Maqashid Syariah in Sustainable Development Goals (SDGs): A Conceptual Framework for Green Economic Policy

Effendi Sadly — 2026-01-13

This study develops a quantitative framework for integrating Maqashid Syariah principles within Sustainable Development Goals (SDGs) implementation for green economic policy in Indonesia. Employing a quantitative research design with panel data analysis covering 2018-2024, this research examines the relationship between Islamic finance development and SDG achievement across 34 provinces. The study constructs a Maqashid-SDG Integration Index comprising five dimensions: preservation of religion (hifz ad-din), life (hifz an-nafs), intellect (hifz al-aql), progeny (hifz an-nasl), and wealth (hifz al-mal). Data from Bappenas, OJK, Ministry of Finance, and BPS reveal that Islamic finance assets reached IDR 2,582 trillion in 2023, representing 10.95% market share, while green sukuk issuance totaled USD 6.9 billion since 2018. Statistical analysis demonstrates a significant positive correlation (r=0.742, p<0.01) between Islamic finance penetration and SDG performance indicators. Regression results indicate that a 1% increase in Maqashid-aligned financing contributes to 0.63% improvement in environmental SDG indicators. The findings validate that integrating Maqashid Syariah into SDG frameworks enhances policy effectiveness for green economic transition, with Indonesia's SDG index reaching 70.22 in 2024. This research provides policymakers with a measurable framework to optimize Islamic finance mechanisms for sustainable development outcomes

Bridging Faith and Finance: A Comparative Analysis of Islamic Bank Resilience and Contagion Risk During Global Economic Shocks (2008 vs. 2020 Crises)

Effendi Samsul — 2026-01-16

This study investigates the comparative resilience and contagion risk profiles of Islamic banking systems during two major global economic crises: the 2008 Global Financial Crisis (GFC) and the 2020 COVID-19 pandemic. . However, profitability declined significantly in 2009 when the crisis affected the real economy. Conversely, during the COVID-19 pandemic, Islamic banks exhibited comparable systemic vulnerabilities to conventional banks when facing exogenous shocks, though with significantly reduced spillover effects. CAR increased from 24.0% to 26.5% while NPF improved from 2.1% to 2.0% during COVID-19, demonstrating structural resilience despite ROA declining from 1.9% to 1.4%. CoVaR analysis reveals Islamic banks receive significant directional risk spillover from conventional banks but transmit substantially less contagion. These findings suggest that while Islamic banking's profit-loss sharing principles and asset-backed financing provide buffer against financial sector crises, the system remains vulnerable to real economy disruptions, challenging the prevailing narrative of unconditional Islamic banking superiority during economic turbulenceThis study investigates the comparative resilience and contagion risk profiles of Islamic banking systems during two major global economic crises: the 2008 Global Financial Crisis (GFC) and the 2020 COVID-19 pandemic. However, profitability declined significantly in 2009 when the crisis affected the real economy. Conversely, during the COVID-19 pandemic, Islamic banks exhibited comparable systemic vulnerabilities to conventional banks when facing exogenous shocks, though with significantly reduced spillover effects. CAR increased from 24.0% to 26.5% while NPF improved from 2.1% to 2.0% during COVID-19, demonstrating structural resilience despite ROA declining from 1.9% to 1.4%. These findings suggest that while Islamic banking's profit-loss sharing principles and asset-backed financing provide buffer against financial sector crises, the system remains vulnerable to real economy disruptions, challenging the prevailing narrative of unconditional Islamic banking superiority during economic turbulence

The Influence of Product Quality, Service Quality, Consumer Trust and Consumer Satisfaction on Consumer Loyalty

Richo Gunawan — 2026-01-29

This study investigates the effects of product quality, service quality, and consumer trust on consumer loyalty to Mills Sport products, both directly and indirectly through consumer satisfaction. The research is motivated by unstable loyalty among Mills Sport consumers in West Jakarta, despite repeated purchases, which raises questions about which drivers are most critical for sustaining long‑term relationships. A quantitative survey was conducted using purposive sampling of 155 Mills Sport consumers who had purchased Mills Sport products at least twice and were at least 18 years old. Data were collected via a structured Likert‑scale questionnaire and analysed using Partial Least Squares Structural Equation Modeling (PLS‑SEM). The findings show that product quality does not significantly affect consumer satisfaction or consumer loyalty, either directly or through satisfaction. In contrast, service quality and consumer trust have significant positive effects on both satisfaction and loyalty, and consumer satisfaction significantly reinforces loyalty. Furthermore, consumer satisfaction mediates the effects of service quality and consumer trust on loyalty, but does not mediate the effect of product quality. The results highlight the central role of service quality, trust, and satisfaction in building loyalty, and suggest that Mills Sport should prioritise relational and experiential aspects over product attributes alone.

The Influence of Service Quality, Food Quality, Price, and Physical Environment on Customer Satisfaction and Customer Loyalty

Shania Syalomita Gracia Datu — 2026-01-29

Strongly embedded customer loyalty impacts consumption behavior. To win business competition, loyal customers are the main goal of the culinary industry through achieving customer satisfaction. Maintaining customer satisfaction, through: service quality as one of the main weapons to maintain prestige value by providing more satisfaction; food quality as an important component in the production process; price which has a significant influence because high or low product prices affect product sales, and the physical environment creates a first impression and influences customers' initial perceptions of service or food quality. This study aims to identify the influence of service quality, food quality, price and physical environment through customer satisfaction on customer loyalty. Sampling used a purposive sampling technique, namely customers consuming takeaway or dine-in at least twice in the past month, minimum age 18 years - maximum 47 years, domiciled in Bekasi City, processing data from 200 respondents using SEM PLS. The results showed that service quality, food quality, price and physical environment have a positive effect on customer satisfaction and customer satisfaction has a positive effect on customer loyalty. Further research can explore other relationships such as celebrity endorsers, brand love, brand awareness, brand image, brand trust and other variables

Beyond Java-Centric Growth: Analyzing Structural Change and Its Impact on Regional Income Convergence in Post-Decentralization Indonesia

Amrani Amrani — 2026-01-30

This study examines the relationship between structural change and regional income convergence in Indonesia following the 2001 fiscal decentralization. Utilizing quantitative analysis on 30 provinces over 2005–2018 and 514 districts from 2000–2017, we employ shift-share decomposition, club convergence testing (Phillips & Sul methodology), and dynamic panel data models. Results reveal that while Java Island maintains 57% of national GDP, post-decentralization patterns show heterogeneous convergence dynamics characterized by five distinct convergence clubs rather than uniform income convergence. Structural change, particularly within-sector productivity improvements, positively impacts regional growth, though effectiveness has declined. Dynamic structural effects increasingly negative, indicating labor reallocation toward less productive sectors. Despite decentralization policies, regional inequality persists, modulated by development thresholds and natural resource endowments. Policy implications suggest necessity for differentiated regional development strategies acknowledging structural heterogeneity across convergence clubs

Business Development Strategy With Swot and QSPM Methods (Case Study: Kampung Kopi Banaran)

Rizkha Rida — 2026-01-30

Kampoeng Kopi Banaran is one of the trademarks that has been established since 2003 in Bawen, Central Java, Indonesia. Kampoeng Kopi Banaran itself houses several business lines under it such as Banaran Sky View Restaurat and Banaran Coffee Shop. Banaran Coffee Shop is one of the business units of Kampoeng Kopi Banaran which has been established since 2003 until now. To achieve this desire, of course, the Kampoeng Kopi Banaran must understand the right strategy so that the business carried out can be well accepted in the market. This research uses three interrelated data processing methods, namely the IFE and EFE matrices, IE matrices, SWOT matrices and QSPM matrices. The IFE and EFE matrices are used to analyze internal and external factors, the SWOT and IE matrices are used to determine alternative development strategies for Kampoeng Kopi Banaran and the QSPM method is used to determine the priority of the Kampoeng Kopi Banaran strategy. The Strengths-Opportunities strategy, which involves using strengths to seize opportunities through different approaches, is the best company development plan for Kampoeng Kopi Banaran. a. Support from Influencers b. Make use of social media and produce engaging and pertinent material for customers. The Integration of methods create an objective and measurable strategies successfully.

The Role of Information System Effectiveness in Strengthening Financial Management and Performance Evaluation

Syaifuddin Syaifuddin — 2026-02-02

Digitalisation in the public sector has led to higher demands for transparency, accountability, and accurate reporting. However, many organisations still face obstacles such as unsynchronised data, slow reporting processes, and performance evaluations that are not fully evidence-based. These conditions indicate that the effectiveness of information systems is urgently needed to strengthen organisational governance and performance. This study aims to analyse the influence of Information System Effectiveness on Financial Governance and Performance Evaluation in Regional Apparatus Organisations (OPD) within local government. The study uses a quantitative approach with an explanatory research design. The research population consists of OPD employees involved in the use of information systems, financial management, and/or performance evaluation. The sampling technique used purposive sampling with a sample size of 120 respondents. Data collection was conducted through questionnaires in the period November–December 2025. Data analysis used PLS-SEM with the help of SmartPLS through measurement model and structural model evaluation. The results showed that information system effectiveness had a positive effect on strengthening financial governance and improving performance evaluation. These findings confirm that an effective information system not only serves an administrative function but also becomes a strategic factor in ensuring more transparent financial management and more objective performance assessment. The implications of this study encourage OPDs to prioritise improving system quality, data integration, and information utilisation as a basis for performance control and evaluation.

Strategic HR Planning and Human Capital Investment in Improving Employee Performance: Mediation of Employee Engagement and Moderation of Psychological Safety

Paroli — 2026-02-04

Changes in the work environment and demands for improved employee performance have made human resource management an increasingly important strategic factor, including in religious-based educational institutions. Organisations not only need targeted HR planning, but also investment in human capital development and a work environment that supports employee engagement. This study aims to analyse the effect of Strategic Human Resource Planning and Human Capital Investment on Employee Performance with Employee Engagement as a mediating variable and Psychological Safety as a moderating variable. This study uses a quantitative approach with explanatory research. The research population consists of all employees and educators at the Inspiratif Al Ilham Islamic Boarding School in Bojongsoang, West Java. The sampling technique used simple random sampling with a sample size of 100 respondents. Data were collected through questionnaires and analysed using Partial Least Squares–Structural Equation Modelling (PLS-SEM) through SmartPLS. The results showed that human capital investment and strategic human resource planning played a role in increasing employee engagement, which in turn drove performance improvement. Psychological safety was also found to strengthen the relationship between engagement and performance, enabling employees to work more optimally in a psychologically safe environment. This study implies that educational institutions need to strengthen human resource investment, build work engagement, and create a supportive work climate to improve employee performance in a sustainable manner.